From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.74 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794192989; b=NcJqx2EOneAq7KBA8WjYbqzZ9PWop2zSZhEL/dlBp00YIfnH4D6jm8BPqyzIo9+1WnBy trAdTXZ2gad0RRiaQVcSgWQ4vU/BPpGukkgdHH1LkVrLvrixdNSsLjyF2VBnikGeZaoDR JIZQCLb0HC7Pzd1CnrYOOs/GQ5sqq5JjWxMxD1HNzptcZCqnia5RU+jR3ugg9z9uhJVhF qLZq53NCAI8MdPvR7oxQXBj8L4b9YNfWbMZ/spm6IYJ4/yDFZXIr1/Xm7I2qkXQpWofog HTwqcjXUXqgTg4AqKQ6wPi/nvVRh2j4OoKrRXJA6N1IpOSrP2QaSfu1Fz+jem0VK9DA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794192989; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:Message-ID:Date:MIME-Version:User-Agent: Subject:To:Cc:References:From:In-Reply-To:Content-Type: Content-Transfer-Encoding; bh=n+4TwEwtUO3KwUkahtVVwASlPtdRGoMNVNlYwVFyhNM=; b=JWw7xLxWqvycWRs8ebQujrJdlU2uyRwKa55UEklBr41vZQEZdF08slUGAn6eIQC+RQKl jds0rHHQKB2y4f1uO3f8U9HzNlBFX9HhPQiwmM8Cv/HjgtFZCHNT3m7wQqR/aR4UdQpRI DPqMOp436FNpw64i3N2DsHeFW2NICP2PTSYtzRVN0CBLPCtfLtj2vjJDqV31zB+FgrfoJ MgU5s+gB60e+Vt9QhzGs1DQYyd64PXxx4iZWkEnbSFpkomk9U8WUKjLhspgjQxU4gRkBy cK/eajCmj+8l68n3kdNqvt/zyFPBvO/71R/9XhS7n1m7yWaP6H4djiJkiUtKoMMvRWQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=Ony5awTA; arc=none smtp.remote-ip=91.218.175.74 Received: from mta0.migadu.com (out-74.mta0.migadu.com [91.218.175.74]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C9768606A320 for ; Mon, 9 Nov 2026 02:56:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org C9768606A320 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=Ony5awTA X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=E6nbi2q9BWguhq7sUJJq5GhBbCo7Z1GUqwFoBaxZTl4=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1794192986; v=1; x=1794797786; b=Ony5awTAgbmLsrGgFLGN+cLVk7IZWAP3tmpT1qrRBuK7dNO0hugdBuUGWBeLt4XIjNOYMq3f 7ufDpZOF7Pzol6jvJvfzNo6qsYak2JTaZ021ZasCg8mEm4DH8yyv7OPSEEEHd98kmkqwqbmAG44 vNDNkSGgDm4jSgrI5mi+O+yI= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id f9c8e6b6d36b6895; Mon, 09 Nov 2026 02:56:26 +0000 X-Mizu-Trace-ID: f9c8e6b6d36b6895 X-Migadu-Flow: FLOW_OUT Message-ID: Date: Mon, 9 Nov 2026 10:56:11 +0800 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC 5/6] iomap: refuse dmabuf iterators on contents-encrypted inodes To: Christoph Hellwig Cc: Jens Axboe , Dan Williams , Matthew Wilcox , Jan Kara , Alexander Viro , Christian Brauner , tytso@mit.edu, Andreas Dilger , Baokun Li , Ojaswin Mujoo , "Ritesh Harjani (IBM)" , Zhang Yi , "Darrick J. Wong" , Andrew Morton , asml.silence@gmail.com, Anuj Gupta , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, nvdimm@lists.linux.dev, linux-ext4@vger.kernel.org, linux-xfs@vger.kernel.org, linux-mm@kvack.org, Li Wang References: <20261105065847.196540-1-mengmeng.zhao@linux.dev> <20261105065847.196540-6-mengmeng.zhao@linux.dev> <20261106104403.GC5668@lst.de> From: Mengmeng Zhao In-Reply-To: <20261106104403.GC5668@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/6/26 18:44, Christoph Hellwig wrote: > I think contents-encrypted should be content-encrypted. > > But we really need to find a way to make these checks more > systematic instead of sprinkling them everywhere. E.g. have a flag > in file->f_mode to allow it, which then only leaves the direct I/O > to buffered I/O fallback as a special case. > Agreed, adding the check to every file system is quite tedious. We'll look into redesigning the implementation based on your suggestion. Thanks for your time!